body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,input,a,p,textarea{
    margin: 0;
    padding: 0;
}

ul,ol,li{
    list-style: none;
}

a{
    text-decoration: none;
    display: block; 
}

img{
    border: none;
    display: block;
}

/*清除浮动*/
.clearfloat:after{
    display: block;
    clear: both;
    content: "";
    visibility: hidden;
    height: 0;
}
.clearfloat{
    zoom: 1;
}
